Case Converter
Text ToolsConvert text between UPPER, lower, Title, camelCase, snake_case and more.
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Your text
UPPERCASE
0 characters in · 0 out. Processed entirely in your browser.
What is Case Converter?
Case Converter re-cases any text between ten styles — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and aLtErNaTiNg. Pick a style and the result updates instantly, ready to copy or download. Programmer styles like camelCase and snake_case convert each line into its own clean identifier, so lists convert row by row. Everything runs in your browser, so your text is never uploaded.
How to use Case Converter
Paste your text
Type or paste into the input box, or click Load file to pull in a .txt, .md, or .csv. The converted result appears on the right straight away.
Choose a case style
Open the Case style menu and pick from UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, or aLtErNaTiNg.
See the live result
The output pane relabels to the style you chose and recomputes on every keystroke and every style change, so you can compare options quickly.
Understand identifier styles
camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE split each line into words — even across existing camelCase boundaries — and rejoin them as one token per line, perfect for turning labels into variable names.
Copy or download
Use Copy to grab the result, or Download to save it as converted.txt. The footer shows how many characters went in and came out.
Common uses
- Turn a heading into Title Case or Sentence case
- Shout or quiet text with UPPERCASE and lowercase
- Convert a label like "User Full Name" into camelCase or snake_case for code
- Build kebab-case slugs or CONSTANT_CASE config keys from plain words
- Normalize inconsistent casing pasted from different sources
- Create playful aLtErNaTiNg text for captions and memes
Why choose FreeTools
100% private
Your files are processed inside your browser and are never uploaded to a server.
Free, no account
No sign-up, no watermark, no paywalled “premium” tier. Just open a tool and use it.
Instant
No upload, no queue, no server round-trip — work starts the moment you drop a file.
Runs in your browser
Built on open web standards. Works on any modern desktop browser, nothing to install.
No upload size caps
Nothing leaves your device, so there’s no server file-size limit — only your machine’s memory.
Yours to keep
Results download straight to your device in clean, standard file formats.